
According to the novel he does, he's just raging because tagyeom took haewons virginity and he's taking it all out on haewon cause to my knowledge he feels "betrayed" that's why he was like ; if you like me why would you have slept with tagyeom ; and he always asks haewon if he likes him still as reassurance after doing horrible things to him to feel secure in his own feelings (or that's what I'm assuming). Haeyoung is just super messed up in the head .

This is my personal opinion but I think he's almost trying to punish haewon that's why he tried guilt tripping him being like I let you and tagyeom have sex yet you do this to me (which is being considerate in haeyoung eyes) and when he was punishing haewon in the bathroom he wouldn't let the other guys touch him just him all because he was mad since he believed haewon had sex with other guys he didn't know about. He's definitely some type of psychopath his way of thinking is so distorted that's it hard for even me to try to explain it.
Bruh does Haeyoung even like Haewon? Wtf is this shit, I feel so bad for him. At this point, suicide is the best answer.